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Name

json_parse — Takes json string and returns parse tree.

Synopsis

integer json_parse ( in txt varchar );
 

Description

This function takes json string and returns parse tree.

Parameters

txt

a json string

Return Types

The function returns tree.

Examples

Example 24.181. Simple example 

SQL>create procedure json_tree_example ()
{
  declare qr, url, cnt, tree, xt, hdr any;
  cnt := '
{ "head": { "link": [], "vars": ["s", "p", "o"] },
  "results": { "distinct": false, "ordered": true, "bindings": [
    { "s": { "type": "uri", "value": "http://example.org/node" }	, "p": { "type": "uri", "value": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" }	, "o": { "type": "uri", "value": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" }},
    { "s": { "type": "uri", "value": "http://example.org/node" }	, "p": { "type": "uri", "value": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" }	, "o": { "type": "uri", "value": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" }} ] } }';
  tree := json_parse (cnt);
  tree := get_keyword ('results', tree);
  tree := get_keyword ('bindings', tree);
  return tree[0][1];
}
;

Done. 
SQL> SELECT json_tree_example();
json_tree_example
VARCHAR
 structure
No. of rows in result: 1

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